Just some thoughts on mounting this mower seat suspension. As long as adding 3 inches to your normal seat height is not a problem, this seems to definitely help with the bumps. I moved my control handles up an inch which is all I could without drilling. Bolt pattern is 11 1/4" wide x 11 1/2", but you could easily drill it if needed. Didn't full test, but just riding a few laps told me it was much better.

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